Ford's new spark plug design might spell trouble

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Posted to Technical Tips Forum on 12/5/2005 40 Replies

Some of you may already know... some may not. Ford has a new design plug for the 5.4L 3 valve. It's not THAT new... been out a couple of years.... but new enough they haven't likely found there way into shops yet for replacement.

I happened to get an '04 F15... Login to read more.

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